stevens



F. STEVENS. LIQUID FUEL BURNER. APPLICAUN HLED 0m26.191s.

'Patented Non'. 15, 19m

2SHEETS--SHEET WITNESSES'.

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Specification el' tettersetent.

Patented Nov. 18 31.919,

.Application tiled. )December 'f Serial llo. 268,239.

To all whom i may concern:

rBe it known that l', FRANK STEvENs, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State oit Pennsylvania, have invented a new and useful Improvement in Liquid-Fuel Burners, ci which the following is a speci-v l have at preseni pending another apple cation -lor'a burner or' similar character, filed May 17, 1918, Serial No. 235,211, in

4which a rotary ian is used to augment the "natural derart resulting from the combustion and in which l employe rotary bed plate for the coinbnstion chamber, the motive power losinga Wheel propelled by compressed air. The objectl of this invention is ay burner the draft which is immensely increased byeinploying; the compressed air in lieu or' the Wind `from a fan wheel, and ll accomplish this object by utilizingr the eX- haast air from the air-wheel, in the pockets or' which l introduce orifices, as Well as by a system or' other 'and direct distribution of conipressedair in various niodes as will be more clearly understood by reference to the accompanying drawings, in Which-` Figure l isa front elevation partly in cen tral section; llig. 2, 'a plan view with the wall of the combustion chamber removed and parts broken away to reveal underlying construction; Fig. .3, vva plan View of the compressed air` system, with the top wall ot' the air reservoir removed, and Fig. il, a detail view oil my modified air in amnection with the oriiice for exhaust.

Similar indices reiter to similar parts throughout the several views.

This invention comprises similar clemenktary members to those described in my prior application with the exception, as stated, of thc substitution of the compressed air system Jfor the fan; and, also a slightly different style of fuel fountain.

The fuel is introduced through a vertical supply pipe` l, capped by a distributing fountain, 2, to a rotatable bed-plate, 3. This plate is secured to a tubular vertical drive shaft, e, (through which the pipe l longitudinally exten( s) to which is also xed, inn mediately beneath the bed-platethe airexp pockets used propelled drive Wheel 5. pipes i', project iets of compressed y the reservoir 8, lawineh any desired presllozsles 6,. from air from i' sure may be established and maintained 'through the general supply automatic compr ssor. (Not shownl ditional regulation is aflorded by lndepend ent subsidiary valves and greatly enlarge and diversify the control, vas

f will he explained laterq Beneath 'the drive Wheel 5, is positioned a chemical container ll, annular in forme-as in my prior application-so to the central shaft and. he (zo-extensive in area. Awith the plate 3, This ineinher, securely retained and supported in the 'base or stand`- ard, ll'is utilized as the upper bearing for shaft e which has a thrust loalbbearing, i2, base, l l"- also secured in the en annular air-channel, lil, is

'to4 provide suitably formed vby the Wall l5 and the fun nace wall which wall loecoines very hot pipe 9, regulated by valve l0, and connected. with any suitable adapted to A' surround itsprincipal support in 'l5 Whenthe apparatus is in operation, to suprply heated atmospheric air directly to and into contact with the chemical in the container so as 'to cause this air to absorb vapor therefrom. llt is then drawn upwardly lov A the interior draft propel-ler wheel 5, ripheryl thereof,

Compressed air may be admitted to the combustioii chamber 9.1 in any one., or all, of three Ways and regulated, with relation to each source of snpplv, as lWell as to the atmospheric `air supply, by the system. of distributive means and control valves now to be described.

as Welles ahout the pe between the spokes of the lle the proportions thereof so There are three independent routes of supply for the compressed air. First, the air which drives the Wheel 5 is supplied through the nozzles G, jetting into the triangular pockets, l), annularly arranged in this wheel, and after altitudinal Wall of each pocket, is permitted vto escape through orifices 16, one of which is located in the upper inclined side near the apex of each pocket. (l herein show the pockets in the i'orm of oblique angled tri'- angle having an obtuse angle in lieu of the right angle shown in my prior application.

very slight inclination away from the base thus produced assists the escape of the air through the orifice 1G.) a peculiar and eiiective draft, viz; a rotating series oli' compressed air streams in which impinging upon the 10o 'lhus l create ,No

horizontally moving ascending columns enter the combustion chamber through the perforations Q0 in the bedsplate. Second, non-rotating streams of compressed-air are intcri'nittently introduced by pipes 17 from reservoir 8" through the periorations 29 of the bed-plate in a continuous succession o violent puffs resulting from the rapid cutting oi the jets by the material parts of the rotating date.

the systemthrough the pipes 18 from reservoir l" to the atmospheric air channel 111 so as to play upon the contents of the container 11. By this means additional substantial suction may be caused to act through theY channel and` increased vaporization of the chemical content produced whereby a chemically charged draft can be amply supplied to the advanced draft produced by the compressed air routes previously described.

Though the agency and manipulation of valves 10 10b and 10With the assistance of gages 30, 30 and 30, various pressures can,A be adjusted and maintained so as toestahlish any desired proportions. For, it willv be observed that the annular reservoir is divided into three distinct compartments, 8a, 8b land 8, each independently supplied by branches 9, 9* andfl, provided, respectively, with the aforesaid individual valves and gages. through pipe 9 compartment 8?, pipe "l, nozzle 6, pocket 19 and orifice 16 (being the driving power and controllimer thefspeed of the bed-y late, as Well as a draft element) may Well ie used as a 'foundation upon which to base the control, land to the strength of which the central draft from vents 17 and the peripheral drafts from vents 18 may be proportioned with equal, more or less pressure. The atmospheric air supply may be controlled by the dampers,

25 1n the channel 14. Ubviously, they must be arc shaped, and I have shown the conventional and Well-known slidable Qrille form thus curved. Channel 14 is purposely located :is close as possible to the con'il'iustion chamber wall 22 in order to raise the temperature of the iniowing air and thereby intensirny the vaporizing capacity.

The conical fountain-head, Q, over which the fuel flows after exuding from pipe 1. is located at the center of the combustion chamber 21 above the bedplate 3 and has, at its base, a gutter 23 in which are made a series of holes, 24, through which the `fuel may drip or dow onto the plate to be rapidly spread by the centrifugal forcel due to the rapid rotation thereof, and almost simultaneously vaporized and consun'ied.

The operation or' this device, which is ob vious from the explanatory remarks inci dent to the foregoing description, is q'uilc And, third, continuous streams ot compressed air are forced into Thus, for example, the airnenas-ae similar to that of my former invention, but. with the afflditional advantages of producing more intensity of draft, much greater latitude of control, and the entirely new feature of ability to change the speed of the bed-plate Without materially altering the amount of draft. In my prior construction the fan producing the forced draft necessarily accompanied the rotating bedplate and change of speed eorrespondinp,r affected the air current. ment, however, the only unavoidable change in air with change ot speed is thatoccurring in the streams termin;r the rotating draft columns from. orifices 16 and, it desired, such increase may be sul'istantially neutralized hy suitable adjustment of either, or both, of the supplies through vents 17 and 18.

IfVhile I show but four of each, it is obvious that the number oi' nozzles f3, central vents 17 and peripheral vents 18 may be increased or diminished to suit any desired conditions, the only important point to sccure the most perfect results in any case being,r to see that each such member be equidistantI from its adjacents. The greater the number of nozzles used will result in increased power and speed as well as increase in draft Excepting the propelling: blasts from nozzles 6, any one or more of the draft producing means maybe greatly reduced` or entirely cut ofi', temporarily .or permanently, and, therefore, five distinct systems of draft are available, viz: 1st, atmospheric air through channel 14 in conjunction with compressed air from nozzles (3; 2nd, atmospheric air mixed' Vwith compressed air from vents 18 through channel 14 in conjunction with compressed air; vfrom nozzles (i: 3rd, atmospheric air through channel 1l in conjunction with (compressed air from nozzles 6 andalso from vents 17'; 4th, atmospheric air mixed with coml pressed air from vents-18through channel 14 in conjunction with compressed air from nozzles 6 and also from vents 17: and 5th, compressed air solely Jfrom one, t\vo or all three oi' the sources, to the exclusion of i atmospheric air.

As the individual character ot' each draft elen'icnt diliers varying coml)inations and proportions ot' these dral'ts produce correspondingly varying results in tbe combustion chamber, and, consequently with such a choice of selection and combination, such power over the proportions and pressures afi'ordcd by thc valves. etc., and the perfect and independent speed control over the rotatable luid-plate. the burner is adapted to practically an unlimited field of' utility in combustion of liquids. Fiirthermorc,Aasv the fountain 2, may be quickly unscrewed from the pipe, 1, and changed,'one appropriate to In this improvcl the density of any-proposed fuel may always used, as, for example, one with many small borings for a thin, liht fiuld, or one with jfewerbut larger ho es for a thick, heavy substance.

For the purpose of illustrating my invention I have described vand shown in the accompanying drawings one form thereof which is at present preferredv by me, although it is tobe understood that the various instrumentalities of whicllmy invention v consists can vbe variouslj7 arranged and organized and that my invention 1s not to be limited to the precise form, arrangement, and organization as herein shown and described, and that I hereby reserve the right to re-or'ganize and re-arrange these instru mentalities within the sco e of my claims. Havingthus ex lained by invention and shown and descri d a way of constructing 'and using the same, lalthough witliont 'attempting to set forth all the forms 1n which itmay be made or all the modesof its use, I claim: 1. A liquid fuel burnercomprisin a perforated rotatable bed-plate', a fuel ountain above, a rotatable member beneath, orifices in said member alined withcertain ofthe perforations in Vsaid bed-plate', means to rotate said plate and 'said member, andmeans to project compressed air from said member.

2. A liquid fuel burner comprisin aperforatedrotata'ble bed-plate, a fuel ountain i above, a series ovents immediately beneath certain of the perforations in `said plate, means to rotate -said plate, and means to project compressed air from said vents.

3. A liquld fuel burner comprising a perforated rotatable bedplate, a fuel fountain above, a rotatable member beneath, orifices in said member alined .With certain of the vperforations in said plate, means to rotate said plate and said n* mber, a series of vents immediately beneath certain other perforations in said plate, and means to project compressed air from said orifices and said vents.

4. In a liquid ,fuel burner, in combinatlon, a combustion chamber, a chemlcal con- `ta1ner beneath, :in atmospheric air channeL leading thereto, vents into said channel, and means to project compressedV air from said vents. l

5. In a liquid fuel burner, in combination, a combustion chamber, a chemical container beneath, an atmospheric air channel leading thereto, vents into said channel, means to project compressed air fromsaid vents, nd means to vary and regulate the relative proportions of both atmospheric and compressed air. Y

6. In a liquid fuel burner, in combination, a combustion chamber, an atmospheric air channel leading thereto. vents in said channel, other vents directed toward said" chamber, and means to project compressed air from all of said vents.

7. In 'a liquid fuel burner', in' combination, a combustion chamber a' chemical chamber beneath, an atmospheric air channel leading 76 thereto, vents in said channel, other vents directed toward said combustion chamber, and'means to project compressed air from all of said vents.

8. A liquid fuel burner comprising, alrotatable bed-plate, a fuel fountain above, a rotatable member beneath, orifices in said member, means to rotate said plate and said member, an atmospheric air channel to said plate, vents in said channel, and means to 8 0 project compressed air from said orifices and said vents.

9. A liquid fuel burner comprisin a rotatable bed-plate, a fuel' fountain a ove, a`

`\rotatable member beneath, orifices in said tatable bed-plate, a lfuel fountain above,

,compressed air vents beneath, means to rotate said plate, an atmospheric air channel leading to said plate; vents in said channel, and means to project compressed air from all of said vents.

11. A liquid fuel burner comprising a ro' tatable bed-plate, a fuel fountain above, 10o compressed air vents beneath, means to r0- `tate said plate, a chemical-container beneath said plate, an atmospheric air channel leading thereto, vents' inv said channel, .and means to project compressed air from all 0f 105 said vents. 12. A' liquid fuel burner comprising'a 10- tatable bed plate, a fuel fountain above, a rotatable member beneath, orifices in said member, means to rotate said plate and said member, compressed air vents beneath said plate, an atmospheric air channel leading to said plate, vents in said channel, and means to project compressed air from said vorifices and from all of said vents.

13. A liquid fuel burner comprising, a rotatable 'bed-plate, a fuel fountain above, a rotatable member beneath, orifices in said member, means to rotate said plate and said member, compressed air vents beneath said plate, a chemical container beneath said plate, an atmospheric air channel leading Zo. said container, vents in said channel, and means to project compressed air from said orifices and from all of said vents.

14. In a liquid fuel burner, in combination, a combustion chamber, an atmospheric .air channel leading thereto, vents in said channel, other vents directed toward said vents, means to vary the relative proportions of atmospheric air with air from the channel vents, and means to vary the relative proportions of both compressed air supplies with the atmosphericair and with each other.

16. A liquid fuel burner comprising a rotatable bed-plate, a fuel fountain above, a

' rotatable member beneath, orifices in said member, means to rotate said plate and said member, an atmospheric air channel to said late vents in said channel means to roject compressed air from said orifices andA said vents, means to 'vary the relative p'roportions of'atmospherica'ir with compressed air in said channel, and means to var v the relative proportions of the compressed air from said orifices and from said vents with the atmospheric air ,and with each other.

17. A liquid fuel burner comprising a rotatable bed-plate, a fuel fountain above, a. rotatable member beneath, orifices in said member, vmeans to rotate said plate andsaid member, a'. chemical container beneath said plate, an atmospheric air channel leading thereto, vents in said channel, means to pro- L)ect compressed air from said orifices and' said vents, nieans'to var)7 the relative proportions of compressed air and atmospheric air in said channel, and means to va y the relative proportions of t-he compressed air from said orifices and from said vents with the atmospheric air and with each other.

18. A liquid fuel burner comprising a rotatable bed-plate, a fuel fountain above,

lcompressed air vents beneath, means to rotate said plate, an 'atmospheric air channel leading; thereto, vents in said channel, means to project compressed air from all. of said ventas, means to vary the relative proportions of atn'iospheric and compressed air in said channel, and means to vary the relative proportions of the compressed air from each set of vents with the atmosphericl air and with each other.

19. A liquid fuel burner comprising a rotatable bedplate, a fuel fountain above, compressed air vents beneath, means to rotate said plate, a chemical container beneath said plate, an atmospheric air channel leadingr thereto, vents in said channel, means to project compressed air from both sets of vents, means to vary the relative proportions rotatable member of atmospheric and compressed air in said channel, and means to vary the relative proportions of the con'ipressed air from each set of vents with the atmospheric air and vJtt-h each other.

20. A liquid fu'el furnace comprising a rotatable bed-plate, a fuel 'fountain above, a.l rotatable member beneath. orifices in said member, means-to rotate said plate and said member, compressed air vents beneath said plate,an atn'iospheric air channel leading to said plate, vents in said channel, means to project compressed air from said orifices and from all of said vents, means to vary the relative proportions of atmospheric and compressed air in said channel, and means to vary the proportions of compressed air .from all three sources with the atmospheric air and with one another.

21. A liquid fuel burner comprising a. r0- tatable-bedplate, a fuel fountain above, a rotatable member beneath, orifices in Said member, means to rotate said plate and said member, air vents beneath said plate, a. chemical container beneath said plate, -an atniospheric air channel leading thereto, .vents in said channel. means to project compressed air from said orifices and from all of said vents, means to vary the relative proportions of atmospheric and compressed air in said channel, and means to vary the proportions of compressed air from all three. sources ivith the atmospheric air and with one another.

v22. A liquid fuel burner comprising a r0- tatable bcd-plate, afuel fountain'above, a beneath, orifices in said member, means to rotate said plate and said member, compressed air vents beneath said plate, means to project compressed air from said orifices and from said vents, and means to vary t-liel relative proportions of compressed air from said vents and said orifices respectively. y

2?. In a liquid fuel burner. a draft sys tem comprising a rotatable burner-plate, perforations therein. and means to project a horizontally rotating series of ascending streams of compressed air through saidperforations.

24. In'la liquid fuel burner, a draft system comprising a rotatable perforated, burner-plate, means to project a .horizontally rotating series of ascending,r streams of compressed air through the perforations therein, and means to cause an annular draft of air to converge into said rotating series.

25. In a'liquid fuel burner, a draft'system comprisingrl a rotatable vperforated burner plate, means to project a horizontally rotating series of ascending streams of coinpressed air through said perforations therein, and means to cause an annular draftiof chemically charged air to intermingle with said rotating series.

annular dra Lacasse 26. In aliquid fuel burner, a draft system com'prising a rotatable perforated burner plate, means to project a homzontally rotating series of ascending streams of coinprcssed air through the perforations therein, and means to cause a tixed series of ascending streams of compressed air to in- 'terlace with said rotating series'.

27. In a liquid fuel burner, a draft system comprising a rotatable perforated burner plate, means to project a horizontally rotating series of ascending streams 'of coinpressed air tliroughAthe perforations there-- inmeans to cause a fixed series of. ascending streams of compressed air to interlace with said rotating' series, and `nieans lo cause an annular draft of heated air to4 con- "verge into said interlaced streams.

28. In a liquid fuel burner, a draft system comprising a rotatable perforated burner plate, means to project a horizontally rotating series of ascending streams of coinpressed airthrouglithe perforations therein, means to 'cause a fixed series of ascending streams of compressed air to interlace with said rotatin series, and means to cause an annular dra of chemically charged heated air to converge into said interlaced streams. A

' 29. In a liquid fuel burner, a draft system comprising a rotatable perforated burner plate, means to project a horizontally'ro- .tating series of ascending streams of compressed air through the perforations therein, means to cause a fixed series of ascending streams of compressed air to interlace with said rotatin series, and'means to cause an 0f compressed air to converge in'to said interlaced streams.

30. In a liquid fuel burner, a draft system comprising a rotatable perforated burner plate, means to project a horizontally rotating series 'of ascending streams of compressed `air through the perforations therein, means to cause a fixed series of ascending streams of'compressed air to interlace with said rotating series, and means to produce an iiiee l behind the apex of each of said pocket and an air reservoir with pressure control appliances to supply said nozzles.

32. In a device of the character described,

in combination, rotatable members to augment combustion and actuating means therefor comprising a drive wheel, obtuse angled triangular pockets ann'iilarly disposed therein, a' orifice in the upper Wall of each pocket, and means for projecting streams of dompresse'd air *"into said pockets and through said orifices.

33; In a de vice oi the character described, an apparatus combining draft producing 'and driving utilities, comprising an annu-l lar rotatable member, a drive shaft thereto, a series of orifices therein, a corresponding series'of pockets tliei'ein, nozzles ositioned ic eject compressed air into said) pockets, means to ziiiord a continuous flow of compressed air to said nozzles, and means to vaiy and control the pressure and volume of the flow.

34. In a device of the character described,

an n ,iarai Lis eombining'draft producing and driving utilities, comprising a drive Wheel,

a circle of pockets adjacent-to the circum A ference thereof, a circle of orifices equal in number and communicating respectively with said pockets, nozzles positioned to eject compressed air into said pockets, other nozzle's positioned to project com ressed air be- #twecn the spokes of said Whee means to. af-

ford a continuous flow of compressed air to all of said nozzles, and means to vary and control the pressure and supply of said air. j 35. In a device of the character described, an apparatus 'combining draft producing :ind driving utilities, comprising a drive Wheel, a circle of pockets adjacent to the I circumference thereof, a circle of orifices equal in number andcommunicating respectively With said pockets, nozzles positioned to eject compressed air into said pockets, other nozzlesI positioned to project compressed air between the spokes of said Wheel, still other nozzles positioned to project coinpressed air horizontally beneath said wheel,

leans to afford a continuous flow of compressed air to all of said nozzles, and means to vary and control the supplyof said air.

36. In a device of the character described, a fuel supply fountain comprising a coniform body part, a central opening truncating the apex thereof, a channel encircling the base thereof, divers holes, through saidv channel, and means to attach said central opening witha fuel supply source.

Signed at Philadelphia this fifth day of Beceinber A. D. 1918..

y FRANK STEVENS. Witnesses ALnnn'r S. HAY, Hoen MoDoNann. 

